CVE-2021-29875
📋 TL;DR
IBM InfoSphere Information Server 11.7 has an insecure third-party domain access vulnerability that could allow attackers to obtain sensitive information. This affects organizations running vulnerable versions of IBM InfoSphere Information Server. The vulnerability involves improper access controls to third-party domains.
💻 Affected Systems
- IBM InfoSphere Information Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could exfiltrate sensitive business data, intellectual property, or personally identifiable information from the InfoSphere environment.
Likely Case
Unauthorized access to sensitive configuration data, metadata, or partial data exposure through third-party domain interactions.
If Mitigated
Limited or no data exposure with proper network segmentation and access controls in place.
🎯 Exploit Status
Exploitation requires understanding of InfoSphere architecture and third-party domain configurations. No public exploit code has been identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fix pack or interim fix as specified in IBM advisory
Vendor Advisory: https://www.ibm.com/support/pages/node/6509616
Restart Required: Yes
Instructions:
1. Review IBM advisory at provided URL. 2. Download appropriate fix from IBM Fix Central. 3. Apply fix following IBM installation procedures. 4. Restart affected InfoSphere services. 5. Verify fix application.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to InfoSphere servers and third-party domains
Access Control Review
allReview and tighten third-party domain access permissions
🧯 If You Can't Patch
- Implement strict network segmentation to isolate InfoSphere servers from untrusted networks
- Monitor and audit all third-party domain access attempts and review access logs regularly
🔍 How to Verify
Check if Vulnerable:
Check IBM InfoSphere Information Server version and compare against affected versions in IBM advisoryCheck Version:
Check version through InfoSphere administration console or consult IBM documentation for version verification commandsVerify Fix Applied:
Verify fix application through IBM InfoSphere administration console and check version information📡 Detection & Monitoring
Log Indicators:
- Unusual third-party domain access patterns
- Unauthorized access attempts to sensitive endpoints
Network Indicators:
- Unexpected outbound connections to third-party domains from InfoSphere servers
SIEM Query:
source_ip IN (InfoSphere_servers) AND dest_domain IN (third_party_domains) AND action='access'